interrupt.c

8051入間程序

#include <REGX52.h>

int t0Counter = 0;
int t1Counter = 0;

void main(void)
{
	IE = 0x87;	//Enable interrupts
	TMOD = 0x22;	//Mode 2
	
	TL0 = 6;	//Timer init value , 250us
	TH0 = 6;	//Timer
	TR0 = 1;	//Timer start

	while(1)
	{
		//Main	
	}
}


/***************************
* External 0 interrupt
***************************/
void EX0_int(void) interrupt 0
{
	//Operation
}

/***************************
* External 1 interrupt
***************************/
void EX1_int(void) interrupt 2
{
	//Operation
}

/***************************
* Timer 0 interrupt
***************************/
void T0_int(void) interrupt 1
{
	T0Counter++;
	if(T0Counter>=2000) //250us x 2000 = 0.5s
	{
		t0Counter = 0;
		//Operation
	}
}

/***************************
* Timer 1 interrupt
***************************/
void T1_int(void) interrupt 3
{
	T1Counter++;
	if(T1Counter>=2000) //250us x 2000 = 0.5s
	{
		t1Counter = 0;
		//Operation
	}
}